public string Encrypt(string message)
{
var bitList = new BitList(new BitArray(Encoding.UTF8.GetBytes(message)));
if (bitList.Count > 256)
{
throw new SHA_256_Exception("Message must be equal or less then 256 bit");
}
bitList.ListOfBits.Add(true); //Added one bit
if (bitList.Count < 448) //Added (L + 1 + K) mod 512 zero bits
{
bitList.AddBits(448 - bitList.Count);
}
BitList.Concate(bitList.ListOfBits, new BitList(new BitArray(message.Length), 64).ListOfBits); //Added 64 bit word length
var blocks32 = BitList.Split(bitList, 32);
for (int i = 16; i < 63; i++)
{
var s0 = (BitList.RotRight(blocks32[i - 15].ListOfBits, 7)) ^ (BitList.RotRight(blocks32[i - 15].ListOfBits, 18)) ^ (BitList.LogicRight(blocks32[i - 15], 3));
var s1 = (BitList.RotRight(blocks32[i - 2].ListOfBits, 17)) ^ (BitList.RotRight(blocks32[i - 2].ListOfBits, 19)) ^ (BitList.LogicRight(blocks32[i - 2], 10));
blocks32.Add((blocks32[i - 16] + s0) + (blocks32[i - 7] + s1));
}
var a = H[0];
var b = H[1];
var c = H[2];
var d = H[3];
var e = H[4];
var f = H[5];
var g = H[6];
var h = H[7];
for (int i = 0; i < 63; i++)
{
var sum0 = (a >> 2) ^ (a >> 13) ^ (a >> 22);
var Ma = (a & b) ^ (a & c) ^ (b & c);
var t2 = sum0 + Ma;
var sum1 = (e >> 6) ^ (e >> 11) ^ (e >> 25);
var Ch = (e & f) ^ ((~e) & g);
var t1 = h + sum1 + Ch + blocks32[i] + K[i];
h = g;
g = f;
f = e;
e = t1 + d;
d = c;
c = b;
b = a;
a = t1 + t2;
}
H[0] += a;
H[1] += b;
H[2] += c;
H[3] += d;
H[4] += e;
H[5] += f;
H[6] += g;
H[7] += h;
return($"{H[0]} {H[1]} {H[2]} {H[3]} {H[4]} {H[5]} {H[6]} {H[7]}");
}
